Initial commit - Auth

Auth.Core/Utility/IEnumerableExtensions.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Auth.Core.Utility;
+
+public static class IEnumerableExtensions
+{
+    public static IEnumerable<List<T>> Batch<T>(this IEnumerable<T> source, int batchSize)
+    {
+        var batch = new List<T>(batchSize);
+        foreach (var item in source)
+        {
+            batch.Add(item);
+            if (batch.Count == batchSize)
+            {
+                yield return batch;
+                batch = new List<T>(batchSize);
+            }
+        }
+        if (batch.Count > 0)
+        {
+            yield return batch;
+        }
+    }
+}